/Engine/Source/Runtime/UMG/Public/Blueprint/WidgetBlueprintGeneratedClass.h
void GetNamedSlotArchetypeContent ( [TFunctionRef](API\Runtime\Core\GenericPlatform\TFunctionRef)< void([FName](API\Runtime\Core\UObject\FName), [UWidget](API\Runtime\UMG\Components\UWidget) *)> Predicate ) const